Swallow

’S- tail. In fortification, an out-work, differing from a single tenaille, as its sides are not parallel, like those of a tenaille; but if prolonged, would meet and form an angle on the middle of the curtain; and its head or front composed of faces, forming a reentering angle. This work is extraordinarily well flanked, and defended by the works of the place, which discover all the length of its long sides, .